S-92949A716 1/2"-13 x 1 1/2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable performance in demanding applications
• Precise Class 3A thread fit provides secure fastening and reduces the risk of loosening
• Hex drive design allows for easy installation and high torque application
• Coarse UNC threading enables quick assembly and strong grip in various materials
• Fully threaded shank offers consistent holding power along the entire length
• Rounded button head provides a low-profile, aesthetically pleasing finish with reduced snagging

Professional Applications & Engineering Value

This 18-8 stainless steel rounded head screw is engineered to address critical industrial challenges, such as vibration resistance and environmental exposure. The passivated finish enhances its ability to withstand corrosive conditions in marine, chemical processing, and outdoor equipment applications. With a 1/2"-13 UNC coarse thread and Class 3A fit, it ensures tight, reliable connections in heavy machinery, structural assemblies, and automotive components, minimizing maintenance needs and downtime. The combination of 70,000 psi tensile strength and Rockwell B55 hardness provides durability under high stress, making it a trusted choice for engineers seeking long-term fastener solutions.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. It features a Class 3A thread fit for precise tolerances and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.